[EN]In current society, it is more and more common to come across a multicultural environment and diverse cultures. In general, societies are more plural at the global level and currently it is difficult to consider them monolingual or to have only one culture. Even though the realities differ everywhere, societies present more than one culture or language. By means of this PhD dissertation, the linguistic and cultural practices of the students of Bilbao (in Basque, Spanish and any other language) will be analysed. Moreover, we will also analyse use of the Basque language and how the practices of Basque culture are, together with the factors that have an effect on those practices and the steps that will be appropriate in the future regarding both culture and language planning.